said by CTinCT:I too use pop.att.yahoo.com. As a test, I set up a mail.yahoo.com account in my mail client (TBird). It worked fine, although that's not necessarily proof positive it would if I cancelled my my ATT DSL account.
I canceled AT&T in April, 2011. I was in the 'pacbell.net' domain (former Pacific Bell Telephone). All 'pacbell.net' accounts are still active. I use these settings in Mozilla Thunderbird:
Configuring T-Bird for converted ex-AT&T accounts.
